Machinery for conveying blast-furnace slag.



E. A. UEHLING. MACHINERY FOR CONVEYING BLAST FURNACE SLAG.

APPLICATION FILED JUNE 30,1908. I,

I Patented June 1, 1909.

SHEET- 1,

4 SHEETS 1h ven to):

A tty Edward I. y

E. A. FEELING, MACHINERY FOR CONVEYING BLAST FURNACE SLAGL .APPLIUATION FILED JUHE 30,1908.

Patented June 1, 19%.

'4 BHEET8-BHEET 2.

1'; A. UEHLING.

HAGHIHIIRY FOB, OQNVEYIHG BLAST FURNACE SLAG. Arrimmmi Plum JUNE 30,1908.

Patented'June I, 1909.

4 SHEET8SEBET 3.

E. A. UEHLING, MACHINERY FOR CONVEYING BLAST FURNACE SLAG.

APPLICATION FILED JUNE 30,1908. 923,218.

Patented Jfine1,.1909;

4 SHEETS-SHEET 4.

, f n swim; M riiuwni 2 SZZ e a n receptaclesuehns a steelorelay lined car,

; it into'a pulverulent formsuitableto make is no remunerative demand fOrslag prod. ucts, or they -may 'be* .util'i'zed-directlyfor To all "whom it may roricern':

convenient location considerably removed contents of the car on a dump.

'duced can be' pro t ably marketed in this them in a solidified form in which formthey' EDWARD A. valuable, or PASSAIC, NEW JERSEY.

m CHlINERY FOR CONVEYING BLAST-FURNACE SLAG.

Specificationof Letters Patent.

Patented June 1,1909. 7

Application filed Jun au, 1908f Serial No? 441,204.

Be it known tlat L'En 'mnii A. Unnunu, mechanical engineer, citizen of the United l States, and a resident of lassaic, in the State of cw Jersey, have. invented certain new and useful improvements in Machinery for (onveying Blust-Furinu-e Slag, of which the lollowingis a specification, illustrated by the accompanying drawings."

'lhepresent mode ol operation in blast furnaces is to run'olithe slag into a movable and when theear is iill'ed, to run it to some from the. furnace proper m d-discharge the- This has been the mode of operation that has been carried on in connection with most blast furnaces in this countnv'lor a number of years, and the result has been that furnaces that have been in blast for a considerable period 01' time, have accumulated vast sla dumps, which have been a very great an serious innoyanee to the furnace mana enien-t, as these"du1nps have occupied valuable space. and are absolutely worthless in themselves, and have and are increasing in size from day to day. qRecently,however, the problem of converting-the waste products 01' blast-furnace into marketable form,

has been receiving very considerable atten-' tion not only in tlns country, but also abroad,

and runningslag into'water which converts cement has proven to be one of the best methods to utilize this waste material. How ever, only asniall er cent. of the slag pro 'l his inventionrelates to improvements in machines for conveyingthe waste blast furnace slag's" andsimilar materials, receivingtheinin a molten condition and'deliverin'g may be readily; disposed ofyeither by transporting-themto the waste dump when. there railroad ballasti'ng and road lmakin'g, or by further treatm'e'nt. fo 1i various -.a'nd special 7 e obj" ct of I inventioniis id handlef it may 'behised for ballasting of railroad drums.

'Thereservoir E is provided withE-a number Ads irected into the car 1\ itacl'e. located beneath it. Ifv it may be deover screens,[1nstead of going directly-into the'railroad, car as shown. e The operation of this device is as-follo'ws: "The cinder notch Gi' being opened the slag .flows through the runner G into the reser:

'sc1-eens, ,&c., to reduce it to a marketable form that will make it a source of income instead of expense as at present. In the drawings Figure l-shows a planview of the blast furnace. and the means of con necting it with slag conveying apparatus. Fig. 2 shows the slag'conveying apparatus in side elevation. Fig. 3' is an enlarged plan view of the mechanism shown in Fig. 2; and Figs. 4 and 5 are enlarged elevations of thetwo ends of the conveying apparatus, Fig. 4 in a slightly modified form from that shown 'inihe previous figures.

The apparatus consists essentially of .a irarne carrying a drum A driven by a motor and apportionate gear. The inotor and gear are shown at the right handend of, Figs. 1-

.a-nd 2 die-graphically. The left hand end of the apparatus is the drum B, and over these two drums and supported between them in the trough C lies a plurality of chains D.

'Tliese chains are arranged in an endless band extending irom one drum to the otherand follow a catenar curve between the two 011 the ower end of the frame is placed the hopper D and the reservoir E; the hopper D having an opening at its bottom ju'st equal tothe width of the chains.

of holes in tl'i'jbottom which are closedby the meansof he stoppersl manipulated by levers H. On the opposite side 0 the reservoir E isthe platform J for the convenience i v 90,

of the operator-who c'ontrols the levers H; The reservoir E- is connected with the blast furnace Fg as shownin Fig. 1 by'means of the runner G, which is provided with=a catch basin K, and by this means adirect connection is made to the cinder notch G in the over the drum which the slag after passing h or 0t er recepsireitto have-jthemateri'al of a higher-grade 'andof afh erkind,- the's'olidified and cooled slag may be'passed through crusher's and.

voir E, and in case anynietai issues at, the 1 same time from the-blast iurnace, it will'be' cau'ht in and can berecbvejred from, the

catc basin K, so Taste prevent.' it heing I thrus er, On the opposite end of the .-fram eis;provided a'spout L by means of t en actuate the levers H and the molten chain band is six slag will then flow upon the band of chains, which, as has been reviously stated, are covered with the u verized material from the hopper D, regu ating the flow of slag out of the reservoir E by means of actuating the lever arm H and regulatin 'the-speed of the motor by means of which the chains are actuated, the entire protected surface of the r chain band will be covered with a layer of slag of any pro-determined thickness. The speed of the chains and the thickness of the layer of' slag beinso related to each other that the slag will e completely solidifiedby the time it reaches the u peer and discharge.

end of the apparatus. f it is found desirable, the cooling maybe accelerated by sprsy-.

ing water upon the surface of the slag as it moves toward the delive end of the appsratus, as the heat of the s ag might possi ly rove too great for the cars into which it is discharged. The reservoir E is also provided with a trap door in the bottom, which door can be opened when the ap* aratus is not in use, and the cleanings fa directly u on the chain band and be discharged a o with the rest of the slag. %cn molten slag is brought in' corn tact with water, it immediately bubbles and foams up and iota-ms alight cellular structure, and therefore, if a solid product is dcsired,-it is not well to apply'the spray of water upon the outer surface of slag which is being conveyed, until it has cooled sufficiently and formed .a cru t to prevent this bubbling. In the mod form, l i, advantage is taken of th property of the slag; and it is utilized for the purpose of forming a protect-- ive covering to protect the chains from the hot slag. in this modifiediorm plate N, which completely covers the lever end of the the late being placed close to the chain band at -t lower end; but rises slightly toward its right hand end, so as to aiicrd more clear.- ance above the chain. The water supply ipe O with branches P which are regulated y ap wropriate valves, pierces the plateand furnis es means by which the chain band is kept thoroughly chilled and Wet. The chain emerges, from beneath the plate N in this condition, receiving the molten slag flowing irolnthe receptacle E, and as the molten stituted for the hopperv D slag strikes the wetchains, it instantly foams up and lorms a yu'otectiug layer over which the molten slag will spread in a sheet of any p1-e-rlctcr111i11od thickness, which can easily e regulated by means of the speed of the "the chains, and in that manner the chains will be thoroughly protected from the excessive heat of the superposed layer of molten slag. v

The mechanism shown in Fig. 5 is simply an elaboration of the part shown at the right hand end of Fig; 2 and does not need to be further described as any form of motor may be used and the motion can be imparted to the chain by means of gears asshown.

One feature of this device to which special attention is called is in the alinement of the trough. This trough is constructed as will seen in Fig. 2 on a curve, conforming to a catenary which catenary is calculated so that the pull exerted by the drum A will tend to raise the chains with their load from. the bottom of the trough along its entire length; and in this manner the friction, and

consequently, the power re uircd to operate the machine will be consi erably reduced. Also the wear and tear on the parts will be reduced as the form of the trough, conformin as it will to the curvature of the chains wil onl rsupport a portion 0! the load on the chains throughout its entire length, which in consequence results inar'mlnimum of l'rictioruil pressure upon the trough from the chains, and hence the resistance will be A pro iorticnately diminished.

v ithout enumerating the many modifications of which this invention is capable, and without limiting myself to the special form of device herein shown, what I claim and desire to obtainv protection for by Lettors Patent is the following:

1". in a machine adapted to convey blast furnace slag the combination of a supporting frame, drums mounted thereon on either end, and adapted to'carry and actuate a plurality of endless chains, chains passing over said drums extending the length of said frame, a trough upon said frame adapted to hold the upper strands of said chains, means for actuatin' one of said drums, and manuallycontro ed means for flowin molten slag upon the upper surface of said chains substantially asset forth and described.

2. A slag conveying machine consisting of a throng: and two drums supported by a framewor a chain band traveling through said trough and over said drums, means for driving said drums, a reservoir placed over the lower end of said ,trough, means for conveying the slag from the furnace to said reservoir and means for regulating the flow of the molten slag on to the said chain band as described substantially as set forth.

3. A conveying machine adapted to receive molten material and deliver said material in a solidified form comprising an endless conveying band, means for driving and supporting said band, means for delivering molten .material' on said band, and rnans adapted to receive a heat resisting material and gravitate said material substantially evenly over'the u iper surface of the band and before the mo ten material is gravitated on said band.

4. In a mechanism adapted to convey molten material, a supporting frame, the upper members. of which ere alined in a catenary curve,a drum andactuatin'g mech anism therefor at one end of said frame, a drum at the other end of said frame, a re' ceptacle located adjacent to the second said drum, a runner discharging into said receptacleya plurality-of endless chains passing over said drums, a trough on the upper side of said frame adapted to en port said chains,

means, manually contro ed', for. allowing the contents of sald receptacle to flow over .the surface of said chains and means for discharging the material at the upper end of said chains, substantially as set forth.

5. In a mechanism adapted to convey molten material, a supporting frame, the upper members of which are'alined in a catenary curve, a drum and actuating mechanism therefor at one cnd of said frame, a

druln at the other endof said frame, a receptacle located adjacent to the second said drum, arunner discharging into said receptacle, and means beside said receptacle adapted to coat said chain with a heat resistmg I material. v

6. In a ,mechanism adapted to convey molten material, a supporting frame, the upper members of which are alined in a catenary curve, a drum and actuating mechanisrn therefor at one end of said frame, a drum at the other end of said frame, a receptacle located adjacent to the second said drum, a runner discharging into said receptacle, a plate located at the lower end of said frame and above said chains and means for spraying water on said chains under said plate before the molten material comes incon tact with the said chains.

7. In a machine for conveving material consisting of a conveying band passing over two drums, a trough supported between said drums, the bottom of said trough having a longitudinal curvature conforming to or approximating a -catenary, mechanism for driving said drums, and means for regulat ing the flow of material onto said conveying purpose set forth.

.65 1 band in the manner described and for the v 8; In a slag conveying machine consisting of a supporting frame carrying a trough, a reservoir from: which the slag s delivered into said trough, means for conveying the sla from the receiving tothe delivery end, an gravity in said trough a coating-of heat fesisting material before the slag is deposited therein to protect the conveyer from the ex cessiveheat of the molten slag.

Signed this 25'? day of June 1908 at New York,.l\.Y. I

EDWARD. A, UEHLING.

\Vitness'es:

CARE-1E L. Hm'nmn, Jasmin BOYLE.

means for uniformly depositing by- 

